File: scoped_mach_vm.cc

package info (click to toggle)
chromium-browser 41.0.2272.118-1
  • links: PTS, VCS
  • area: main
  • in suites: jessie-kfreebsd
  • size: 2,189,132 kB
  • sloc: cpp: 9,691,462; ansic: 3,341,451; python: 712,689; asm: 518,779; xml: 208,926; java: 169,820; sh: 119,353; perl: 68,907; makefile: 28,311; yacc: 13,305; objc: 11,385; tcl: 3,186; cs: 2,225; sql: 2,217; lex: 2,215; lisp: 1,349; pascal: 1,256; awk: 407; ruby: 155; sed: 53; php: 14; exp: 11
file content (33 lines) | stat: -rw-r--r-- 896 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
 
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/mac/scoped_mach_vm.h"

namespace base {
namespace mac {

void ScopedMachVM::reset(vm_address_t address, vm_size_t size) {
  DCHECK(address % PAGE_SIZE == 0);
  DCHECK(size % PAGE_SIZE == 0);

  if (size_) {
    if (address_ < address) {
      vm_deallocate(mach_task_self(),
                    address_,
                    std::min(size_, address - address_));
    }
    if (address_ + size_ > address + size) {
      vm_address_t deallocate_start = std::max(address_, address + size);
      vm_deallocate(mach_task_self(),
                    deallocate_start,
                    address_ + size_ - deallocate_start);
    }
  }

  address_ = address;
  size_ = size;
}

}  // namespace mac
}  // namespace base